title: Evidence of superconductivity on the border of quasi-2D ferromagnetism in Ca2RuO4 at high pressure.
abstract: The layered perovskite Ca(2)RuO(4) is a spin-one Mott insulator at ambient pressure and exhibits metallic ferromagnetism at least up to ∼ 80 kbar with a maximum Curie temperature of 28 K. Above ∼ 90 and up to 140 kbar, the highest pressure reached, the resistivity and ac susceptibility show pronounced downturns below ∼ 0.4 K in applied magnetic fields of up to ∼ 10 mT. This indicates that our specimens of Ca(2)RuO(4) are weakly superconducting on the border of a quasi-2D ferromagnetic state.
authors.affiliation: Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, UK. patricia.alireza@physics.org
authors.forename: Patricia Lebre
authors.initials: PL
authors.lastname: Alireza
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Nakamura
authors.forename: Swee Kuan
authors.initials: SK
authors.lastname: Goh
authors.forename: Yoshiteru
authors.initials: Y
authors.lastname: Maeno
authors.forename: Satoru
authors.initials: S
authors.lastname: Nakatsuji
authors.forename: Yuen Ting Chris
authors.initials: YT
authors.lastname: Ko
authors.forename: Michael
authors.initials: M
authors.lastname: Sutherland
authors.forename: Stephen
authors.initials: S
authors.lastname: Julian
authors.forename: Gilbert George
authors.initials: GG
authors.lastname: Lonzarich